Dish-heater



'( No ModeL) H. A. SAYWYBR. -Di'sh Heater'.

10.230,199. y Paenfeq July 20,1880;

Amm/1.@

N-FETES. PHDTOLITHOGRAPHER. WASHINGTON. D C.

NITED STATES PATENT Ormea@ HARRIE'I A. SAWYER, OF ST. LOUIS, MISSOURI.

DISH-HEATER SPECIFICATION forming part of Letters Patent No. 230,199, dated July 20, 1880.

Application led April 30, 1880.

To all whom it may concern:

Be it known that I, HARRIET A. SAWYER, of the city of St. Louis, county of St. Louis, and State of Missouri, have invented certain new and useful Improvements in Dish-Heaters, of which the following' is a specification.

My invention relates more particularly to that class of heaters in which a pre-heated block of metalor other suitable materialisused as the heating agent; and it consists in such a construction of this block and the stand which supports it as insures the substantial insulation of the block from the stand, and prevents any burning or scorching of the table and such heating of the stand as would occasion inconvenince in handling it.

Figure l of the accompanyingdrawings is a perspective of the stand or support in Whichl place the heated block.A Figure 2 is a perspective of the block as seen from the under side. Fig. 3 is a vertical cross-section taken through the center of the block and stand when ,they are placed together as in use.k

The stand as I construct it consists of an open skeleton-frame With closed bottom, havin g formed upon it, within the outer frame, a series of lugs, a a a. It is also provided With suitable legs b, and ears or handles c.

The block has formed upon its bottom, near the outer edge, a shoulder, d, corresponding to the lugs a ofthe stand. This shoulderIform by a groove in the bottom of the block, which does not interfere with the block being brought indirect contact with the stove While being heated. When the block, after being heated, is placed in this stand the lugs Will support it and prevent its coming in contact With thebottom of the stand, while at the same time these lugs, combined with the shoulder .about the edge of the block, will prevent the block from coming in contact with the sides of the stand. The block is thus substantially insulated upon these lugs, and is prevented from comm unicatin g its heat to either the bottom or sides of the stand, which serves as a kind of guardabout the block. By makin g a close bottom in combination with these lugs I prevent any scorching or blistering of the surface ofthe table, as this bottom forms a shield separated itself from the block by an air-space, and, having no (No model.)

direct contact with the block, serves to intercept the heated rays from the table beneath.

rIhe heated block is guarded on every side except the top, on which the dish rests, by the frame, which is separated from it by an airspace. The heat-rays rising from all parts of the block have uninterrupted access to the dish above. Y

rPhe lugs could be formed into a solid ring and the sides of the stand be made solid, and still serve some of the purposes of my invention 3 but this would not only unnecessarily increase the weight and consume unnecessary material, but would cause a much larger amount of heat to be communicated to the stand, and especially to the upper part and handles, which the open frame-Work seems in a great measure to insulate. The formation of a solid. ring in place of the lugs would prevent a circulation of air beneath the block and renderthe bottom less effectual in .shielding the table. It is obvious, too. that a slight inclination to the lugs or bevel to the edge of the block might be made to answer substantially the same purpose as the groove'on the block, though it would be less convenient, as liable to bind and not so readily centered.

Metal or other suitable material maybe used for the construction of both the block and.

stand. A more perfect insulation may be secured by making them, or the parts which come in contact, of material of different conductive powers.

The block is provided with a socket in its upper surface or with other suitable means for enabling it to be lifted into its place by an ordinary stove lever, handle, or other suitable appliance.

Both the block and frame may be made of any desirable shape and dimensions, to correspond with the dishesto be heated upon them.

I claim as my inventionl. In a dish-heater, the combination, with the heating-block, of a supporting-frame provided With a series of lugs which serve to prevent the block from comin g iu contact with the bottom of said frame.

2. In a dish-heater, the combination, with the heating-block, of a supporting-frame the sides of which are substantially parallel with 10o 4. The frame or support A, having open latu eral walls, lugs a, to support the heetingblock. with spaces between them to admit the free circulation of :tir between the bleek and the bottom of the frame, anda eiosed bottom, serving as a, shield to the table.

5. In zt dish-heater, the combination, with the heating-bleek, of a supporting-frmne provided with :L series of lugs which receive the bloek and support it out of Contact with both the bottom and the sides of the frame.

6. In combination with the frame A, having' internal sumiorting-lugs, closed bottom, and open lateral walls, the heating-block B, provided with it shoulder or groove upon its bottoni edge to prevent its eoming'in Contact with the lateral walls of said frame.

HARRIET A. SAVYER.

Witnesses MELVILLE SAWYER, MAY LEATHERMAN. 

